Origin data of Manuscript "Inhomogeneous porewater geochemistry in unconsolidated argillaceous sediments: Implications for porewater extraction protocols and characterization of solute mobilization".

Raw and reprocessed data of manuscript "Inhomogeneous porewater geochemistry in unconsolidated argillaceous sediments: Implications for porewater extraction protocols and characterization of solute mobilization".IncludingDOM EEM raw data.Porewater extraction results.QA&QC data.Figure data.Reprocessed data.Version 2 includes extra mineral XRD results, particle size distribution results and mercury intrusion porosimetry in response to two anonymous reviewers' comments.This version includes extra wavelength scan results and fitting results for these hypothetical functions in Figs. 6 and 7.Please find the published manuscript in Chemical Geology at 10.1016/j.chemgeo.2025.122813